Pentax DA 20-40mm Limited starts shipping !

Started Dec 3, 2013 | Discussions thread
jeanphilippe Goube Senior Member • Posts: 1,880
Re: 100 % crops vs DA 21. Right and left side

Joseph Tainter wrote:

jeanphilippe Goube wrote:

Right and left 100 % crops, DA20-40 at 20mm f4

http://imageshack.com/a/img198/485/m2z4.jpg
http://imageshack.com/a/img844/2971/kyj8.jpg

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jpgoube

Jean Philippe, have you tested these lenses for focus correction?

I don't like what I am seeing. The K-3 should produce sharper images that these, especially with a limited lens.

Joe

Not yet. Remember here this is the exterme border of a wide angle zoom stopped down to f4 only. This is a tough test, the DA21 is not a good performer here (see http://www.photozone.de/pentax/662-pentax21f32). The DA20-40 is ahead by a large margin. Even if I adjust for focus correction on the center, field curvature will not allow to have extreme border in focus usually.

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jpgoube

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